Even in the US, urban upper-middle-class people tend to get the two cultures confused since they both equally reject things like suits and liberal arts degrees and clever hipster music.

(European here. Also an amateur rock musician, FWIW.)

It sounds like American urban upper-middle-class culture (you mean the one which Mencius Moldbug calls Optimates, Yvain calls Blue Tribe, Christian Lander calls SWPL, etc., right?) is even more foreign to me than I thought: I'm mildly surprised they find rockers outgroupish enough to lump them with country music folks. I'm also surprised by the association of rock/metal with "rural" -- the first place in the US that springs to my mind when I hear about rock would be somewhere like Los Angeles.